Family Petalodontidae Newberry and Worthen 1866 (cartilaginous fish)
Chondrichthyes - Petalodontiformes
Parent taxon: Petalodontiformes according to M. Ginter et al. 2010
Sister taxa: Belantseidae, Brachyrhizodus, Janassidae, Paracymatodus, Pristodontidae, Serratodus
Subtaxa: Antliodus, Chomatodus, Glossodus, Glyphanodus, Harpacodus, Itapyrodus, Lisgodus, Neopetalodus, Petalodus, Polyrhizodus, Tanaodus
Ecology: nektonic carnivore